In December, the server that hosted Twitual suffered a catastrophic disk failure. We were only able to recover a few older files at that time, but key pieces needed to get the service running again were missing. While we do have a prototype for a new version of Twitual in development, it is not yet in a fully usable state.
However, just last night, we discovered an old development copy of the code which was much more up-to-date than the pieces that we had attempted to recover from the corrupted disk. While it was still quite a bit older than was was running on the site at the time of the crash, we have been able to integrate it with current Twitter API libraries, and our quick patches appear to be working.
Because this recovered base code was written to an older version of the Twitter API, the code to handle API request limits is no longer correct. As a result, you may see situations where you get a list of friends, but zero followers, or vice versa. If this happens, wait about 15 minutes or so, then try again.